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https://bugs.launchpad.net/bugs/1884850
Title:
Xorg server uses unacceptably large amounts of memory (and keep
growing)
Status in xorg-server package in Ubuntu:
Incomplete
Bug description:
Description: Xorg server uses unacceptably large amounts of memory
(and keep growing)
Ever since I upgraded to Ubuntu 20.04 (with fresh install) on my
laptop (Lenovo T450s, Intel Core i5-5200U, Intel HD5500 graphics), I
have been troubled by the way Xorg process uses memory.
Here is an example of memory usage of Xorg as a function of time. I
rebooted the laptop on June 17:
Xorg-usage-20200617a.txt:root 1224 1.9 0.8 948408 98848 tty7
Rsl+ 10:38 0:05 \_ /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth
/var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
Xorg-usage-20200617b.txt:root 1224 2.2 0.8 978264 105180 tty7
Ssl+ 10:38 0:22 \_ /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth
/var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
Xorg-usage-20200618a.txt:root 1224 0.3 1.3 1143064 162584 tty7
Ssl+ Jun17 3:15 \_ /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth
/var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
Xorg-usage-20200619a.txt:root 1224 0.3 2.9 1432232 360700 tty7
Ssl+ Jun17 12:30 \_ /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth
/var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
Xorg-usage-20200619b.txt:root 1224 0.3 2.7 1313120 338656 tty7
Ssl+ Jun17 12:39 \_ /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth
/var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
Xorg-usage-20200623a.txt:root 1224 0.3 6.0 1944364 738596 tty7
Ssl+ Jun17 31:55 \_ /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth
/var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
The filename indicates the date the "ps fuxa" command was run.
Contrast this against the memory usage of another Xorg process run for XPRA:
Xorg-usage-20200617b.txt:wirawan 4452 2.4 2.0 1106920 244984 ?
Ssl 10:46 0:12 \_ /usr/lib/xorg/Xorg-for-Xpra-:100 -noreset -novtswitch
-nolisten tcp +extension GLX +extension RANDR +extension RENDER -auth
/home/wirawan/.Xauthority -logfile /run/user/1000/xpra/Xorg.:100.log -configdir
/run/user/1000/xpra/xorg.conf.d/4451 -config /etc/xpra/xorg.conf -depth 24 :100
Xorg-usage-20200618a.txt:wirawan 4452 0.2 2.0 1108572 246616 ?
Ssl Jun17 2:25 \_ /usr/lib/xorg/Xorg-for-Xpra-:100 -noreset -novtswitch
-nolisten tcp +extension GLX +extension RANDR +extension RENDER -auth
/home/wirawan/.Xauthority -logfile /run/user/1000/xpra/Xorg.:100.log -configdir
/run/user/1000/xpra/xorg.conf.d/4451 -config /etc/xpra/xorg.conf -depth 24 :100
Xorg-usage-20200619a.txt:wirawan 4452 0.2 2.0 1112460 249516 ?
Ssl Jun17 8:34 \_ /usr/lib/xorg/Xorg-for-Xpra-:100 -noreset -novtswitch
-nolisten tcp +extension GLX +extension RANDR +extension RENDER -auth
/home/wirawan/.Xauthority -logfile /run/user/1000/xpra/Xorg.:100.log -configdir
/run/user/1000/xpra/xorg.conf.d/4451 -config /etc/xpra/xorg.conf -depth 24 :100
Xorg-usage-20200619b.txt:wirawan 4452 0.2 2.0 1112964 250020 ?
Ssl Jun17 8:40 \_ /usr/lib/xorg/Xorg-for-Xpra-:100 -noreset -novtswitch
-nolisten tcp +extension GLX +extension RANDR +extension RENDER -auth
/home/wirawan/.Xauthority -logfile /run/user/1000/xpra/Xorg.:100.log -configdir
/run/user/1000/xpra/xorg.conf.d/4451 -config /etc/xpra/xorg.conf -depth 24 :100
Xorg-usage-20200623a.txt:wirawan 4452 0.1 2.0 1113092 250544 ?
Ssl Jun17 11:22 \_ /usr/lib/xorg/Xorg-for-Xpra-:100 -noreset -novtswitch
-nolisten tcp +extension GLX +extension RANDR +extension RENDER -auth
/home/wirawan/.Xauthority -logfile /run/user/1000/xpra/Xorg.:100.log -configdir
/run/user/1000/xpra/xorg.conf.d/4451 -config /etc/xpra/xorg.conf -depth 24 :100
My desktop usage pattern:
* MATE desktop
* 4-desktop setting (standard default MATE when shipped)
* GNUCASH
* about 3 windows of terminal (each about 5-10 tabs)
* XPRA running Firefox web browser (to isolate web browser pixmap memory
usage, if that was the culprit)
* LibreOffice (several windows open at any time)
* using "redshift" to change the desktop color to red at night
I have never seen this before using Ubuntu 20.04 on this machine.
Before, when I was running Debian 8, I could run this machine for months
literally without Xorg memory bloating rapidly like this (but then I was using
xfce instead of MATE).
I viewed the output of xrestop, the pixmap memory usage is dominated by marco
and wnck-applet:
xrestop - Display: localhost
Monitoring 36 clients. XErrors: 0
Pixmaps: 110748K total, Other: 84K total, All: 110833K
total
res-base Wins GCs Fnts Pxms Misc Pxm mem Other Total PID
Identifier
1000000 20 5 2 27 1701 70198K 42K 70241K 2585 marco
1c00000 9 4 0 9 56 30428K 1K 30430K 2612
wnck-applet
1400000 8 4 1 21 116 3134K 4K 3138K 2603 Desktop
0000000 2 0 2 0 178 2700K 6K 2706K ?
<unknown>
3e00000 0 0 0 1 0 2700K 0B 2700K ?
<unknown>
3a00000 17 3 1 8 92 1024K 3K 1027K 3728
(terminal)
In the previous boot (starting May 27 and ending June 17), the XOrg
memory consumption grew to 1.7 GB total.
I don't know exactly which software is responsible to cause this
problem, so I started out with xorg server.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xserver-xorg-core 2:1.20.8-2ubuntu2.1
ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
Uname: Linux 5.4.0-37-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: MATE
Date: Tue Jun 23 18:47:52 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation HD Graphics 5500 [8086:1616] (rev 09) (prog-if 00 [VGA
controller])
Subsystem: Lenovo HD Graphics 5500 [17aa:5036]
MachineType: LENOVO 20BXCTO1WW
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-37-generic
root=UUID=4eafd225-50c7-46d9-b3f9-7982493a300d ro quiet splash vt.handoff=7
SourcePackage: xorg-server
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/23/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET55WW (1.20 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BXCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: 0B98417 PRO
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrJBET55WW(1.20):bd12/23/2015:svnLENOVO:pn20BXCTO1WW:pvrThinkpadT450s:rvnLENOVO:rn20BXCTO1WW:rvr0B98417PRO:cvnLENOVO:ct10:cvrNone:
dmi.product.family: Thinkpad T450s
dmi.product.name: 20BXCTO1WW
dmi.product.sku: LENOVO_MT_20BX_BU_Think_FM_Thinkpad T450s
dmi.product.version: Thinkpad T450s
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.4-2ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
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